Hi doru
I followed the class comments and I tried
Snapshotcello new
configurationClass: ConfigurationOfFourDBrowser;
sourceVersion: #development;
newVersion: '1.0-snapshot-FakeDeliveryAugust2013';
snapshot;
makeStableFor: #'pharo2.x'
and the system barks because newVersion: is not found.
I'm checking.
Stef